Arrangement for slide-tracking of a boring machine in mines with a limited profile

ABSTRACT

A truck adapted to move on tracks in mine galleries supporting at least one boring set is provided with a vertical frame rotatably mounted on the truck frame around its vertical axis, which vertical frame supports on one side at least one boring set, on the other side a horizontal beam pivotably around a vertical axis, the other end of said beam fixed to the jacket of an extensible prop, with hydraulic cylinders controlling mutual position between the vertical frame and the horizontal beam, between the truck frame and the vertical frame and the position of the arms with wheels supporting the truck.

United States Patent Mares [451 May 2, 1972 [72] Inventor: Vladimir Mares, Pribram, Czechoslovakia [73] Assignee: Ceskoslovensky uranovy prumysl, oborovy podnlk, Pribram, Czechoslovakia [22] Filed: Nov. 16, 1970 [21] Appl.No.: 89,595

FOREIGN PATENTS OR APPLICATIONS 528,566 '1921 France 113/23 Primary Examiner-Ernest R. Purser Attorney-Richard Low [57] ABSTRACT A truck adapted to move on tracks in mine galleries supporting at least one boring set is provided with a vertical frame rotatably mounted on the truck frame around its vertical axis,

[30] Foreign Application prlomynam which vertical frame supports on one side at least one boring Nov. 18, 1969 Czechoslovakia ........760l-69 et, on the other side a horizontal beam pivotably around a vertical axis, the other end of said beam fixed to the jacket of U.S. s an extensible prop with hydraulic cylinders controlling mu. [5]] Int. Cl ..E2lc 11/02 ma] m between the vertical frame and the horizontal [58] Field of Search ..173/22, 23, 43, 52, 35 beam between the truck frame and the vertical frame and the position of the arms with wheels supporting the truck. [56] References Cited UNITED STATES PATENTS 4 Claims, 7 Drawing Figures 1,781,887 11/1930 Vodoz ..l73/23 PATENTEDMAY 2 m2 3,559,656

INVENTOR WAD/mire m/m W & ATTORNEY V ARRANGEMENT FOR SLIDE-TRACKING OF A BORING MACHINE IN MINES WITH A LTED PROFILE BACKGROUND OF THE INVENTION This invention relates to an arrangement for side-tracking of a boring machine mounted on a truck, moving on tracks, in order to clear the passage in a mine gallery having a limited profile, which arrangement is together with the boring sets fixed on a truck frame having two couples of pivotable arms with wheels and provided with a horizontally pivotable crossbeam, connected with one end to the jacket of a telescopically extensible prop.

Actually used boring trucks for mines with arrangement for side-tracking have a number of drawbacks. Notwithstanding that their control is difficult and laborious, it is impossible to fix on similar trucks modern boring sets capable to be revolved around a horizontal axis used for boring of parallel bores for cylindrical cuts. Actually used boring sets mounted on similar trucks, enabled in limited profiles of galleries only boring of convergent cuts with a short, not very effective advance. The side-tracking of similar trucks from tracks could be only partly mechanized, whereby not all required safety measures for the attendance could be observed.

SUMMARY OF THE INVENTION It is an object of this invention to provide an arrangement for side-tracking of boring trucks in mine galleries of limited profile, where all major operations connected with the sidetracking would be mechanized.

It is another object of this invention to enable to mount on similar boring trucks boring sets, revolvable around a horizontal axis for boring of cylindrical cuts.

It is still another object to enable to perform the successive operations connected with the side-tracking in an efficient manner.

Bearing these and other objects in mind, the boring machine is mounted on a truck, provided with a horizontal stiff frame, rotatable around a vertical axis at its center, and with two pairs of arms, pivotable around vertical axis on said stiff frame, with wheels at ends of said arms, a vertical frame mounted on said stiff frame rotatably around its vertical axis, at least one boring set supported on one side of the vertical frame, a horizontal beam supported with one of its ends pivotable around a vertical axis on the opposite end of the vertical frame, the opposite end of said horizontal beam con nected with the jacket of a telescopically extensible prop, one end of a rod, parallel with the horizontal beam, joint connected with a bracket fixed to the vertical frame, the second end of said rod joint connected with a vertical guiding rod supported by said prop, forming with said horizontal beam parts of a parallelogram.

The pivotable beam is linked with the vertical frame by means of a hydraulic side-tracking cylinder, similarly the vertical frame is linked with the stiff truck frame by means of a hydraulic revolving cylinder. The arms with wheels are controlled by a hydraulic cylinder located freely in the space between the pivoting axis of said arms, the cylinder and its piston rod actuating rods linked to levers fixed to the arms with wheels.

The main advantage of the arrangement according to this invention is the possibility of an efficient linking of all operations connected with the side-tracking. Modern boring sets, revolvable around a horizontal axis, for boring of cylindrical cuts can be easily mounted on this boring truck and the arrangement of wheels of the truck supported on pivotable arms controlled mechanically and of a cross beam secure the safety of the attendants in the course of transport of the whole arrangement, having a high centre of gravity, on narrow tracks. The mechanization of all operations connected with the sidetracking of the boring truck eliminates all manual work, increases the safety of the crew and reduces the time required for these operations.

DESCRIPTION OF DRAWINGS An exemplary embodiment of an arrangement for sidetracking of a boring truck according to this invention together with difi'erent phases of operation are shown on the attached drawings, where FIG. 1 is an elevation of the boring truck with the arrangement for side-tracking in the transport position,

FIG. 2 the corresponding top view with one pivotable arm indicated in a deviated position,

FIG. 3 an axial cross section of a known telescopically extensible prop,

FIG. 4 an elevation of a side-tracked boring truck,

FIG. 5 the corresponding top view corresponding to FIG. 4 whereby the first two phases of side-tracking are indicated in broken lines with reference letters A and B,

FIG. 6 a cross section through the vertical frame along the plane Vl-Vl indicated in FIG. 4 and finally FIG. 7 a cross section of the stiff frame along the plane VII-V11, indicated in FIG. 4, showing the actuation of the pivotable arms.

DESCRIPTION OF PREFERRED EMBODIMENT With reference to FIG. 1 and 2 the arrangement for sidetracking of a boring truck comprises a stiff elongated truck frame 1, supported in the course of transport by two couples of pivotable arms 2, provided with wheels 3. A vertical frame 4 is mounted rotatably around a vertical axis in the center of the stiff frame 1, on which vertical frame 4 a number of boring sets 5 for instance two boring sets 5 for boring of parallel bores are mounted revolvably around a horizontal axis. On the opposite side of the vertical frame 4, on its upper part, a beam 8 is supported horizontally pivotable by means of a vertical bolt 7, supported by brackets 6, the opposite end of said beam 8 fixed to a vertical jacket 9 of a known extensible prop 10. This prop 10 is telescopically extensible by the action of piston rod 11 (see FIG. 3). A stable bracket 12 is fixed to the vertical frame 4 at the height of the beam 8, with a rod 14 rotatably supported around the axis 13 by said bracket 12 and terminating at the opposite end in a sleeve 15 for sliding guiding along a guiding rod 16. The guiding rod 16 is supported on both ends by holders 17 fixed to the prop 10. The longitudinal axis of the pivotable beam 8 and of the rod 14 form by the fulcrum points of the axis 13, of the sleeve 15, of the bolt 7 and of the vertical axis of the prop 10 a parallelogram, controlled by the hydraulic side-tracking cylinder 18 FIG. 2), joined operatively to parts of said parallelogram, i.e., the piston rod to a stable bracket 19 of the vertical frame 4 and the cylinder to the bracket 20 of the pivotable beam 8.

In FIG. 6 is indicated a similar connection of the hydraulic revolving cylinder 21 with its piston rod to a stable bracket 22 of the stiff frame 1 and with its cylinder to a bracket 23 of the vertical frame 4.

FIG. 7 shows the actuation of the pivotable arms 2 with wheels 3 by the hydraulic cylinder 24, located inside the stiff frame 1 in the space between the axis of the pivotable arms 2. Stable levers 27, 28 are fixed to the arms 2, said levers 27, 28 linked by rods 25, 26 to opposed extremities of both mutually movable functional parts, i.e. again to the cylinder and to its piston rod. Both extremities of the stiff frame 1 are provided with hydraulic jacks 29 with supporting discs (FIG. 2).

The pivotable beam 8 is in the transport position (FIG. 1 and 2) parallel with the longitudinal axis of the track equally as one or more boring sets 5, the horizontal stiff frame 1 remains however in its transverse position, whereby the prop 10 and the hydraulic jacks 29 with the supporting discs are of course retracted. After the boring truck has reached the working site, the whole arrangement is lifted by the hydraulic jacks 29 and by the prop 10 above the track, whereafter the pivotable arms 2 with wheels 3 are by means of the hydraulic cylinder 24, located inside the stiff frame 1, and by means of the rods 25, 26 and levers 27, 28, moved to position 2', 3

(FIG. 2) parallel with the stifi frame 1, that is beyond the track. When the boring operations are finished, the pivotable arms 2 with wheels 3 are returned above the tracks by reverse operation of the hydraulic cylinder 24, whereafter the whole arrangement is lowered on the track by retracting the hydraulic jacks 29 and the prop 10. The whole arrangement is now moved to a chosen safe place and side-tracked to the wall of the gallery in order to clear the working space in the following manner (See FIG. 5). The pivotable beam 8 is first turned by the side-tracking cylinder 18 from position A to position B perpendicularly to the direction of the track, the prop 10 is expanded between the floor and the ceiling, whereby an anchoring head 30 has been prior inserted into a hole bored into the ceiling and its position secured by a threaded sleeve 31 (FIG. 4). The whole arrangement is now lifted by introducing a pressure medium into the vertical mantle 9 of the prop 10, the pivotable arms 2 with wheels 3 are moved in the earlier described way to position 2', 3' and the stifi frame 1 is turned for 90by the hydraulic revolving cylinder 21. The thus prepared arrangement is side-tracked by the side-tracking cylinder 18 to the wall of the gallery (FIG. 4) whereby the parallelogram: pivotable beam 8 holder 17 rod 14 axis 13 vertical bolt 7 adjusts in the course of this movement the boring sets 5 on the vertical frame 4 always into a position parallel with the axis of the track and thus also of the gallery.

I claim:

1; An arrangement for side-tracking of a boring machine mounted on a truck moving on tracks in mines with a limited profile comprising in combination:

a horizontal stifi' truck frame,

two pairs of arms pivotable around vertical axis on said truck frame,

wheels on free ends of said arms,

a vertical frame mounted rotatably on said stiff truck frame about a vertical axis passing through the center of said stiff truck frame,

at least one boring set supported on one side of the vertical frame,

a horizontal beam supported with one of its ends pivotably around a vertical axis on the opposite side of the vertical frame,

a telescopically extensible prop,

the second end of said horizontal beam connected to the jacket of said prop,

a rod parallel with said horizontal beam,

one end of said rod joint connected with a bracket fixed to the vertical frame,

the second end of said rod joint connected to a vertical guiding rod fixed to said prop,

the horizontal beam and said rod parallel therewith forming parts of a parallelogram.

2. An arrangement as set forth in claim 1, said horizontal beam linked with said vertical frame by means of a hydraulic side-tracking cylinder.

3. An arrangement as set forth in claim 1, said vertical frame linked with said stiff truck frame by means of a hydraulic revolving cylinder.

4. An arrangement as set forth in claim 1, said arms with wheels, supported horizontally pivotably by the stiff truck frame provided with stable levers, a hydraulic cylinder with a piston rod located freely in the space between pivoting axis of said arms, said stable levers linked by rods on one side to said hydraulic cylinder, on the other side to its piston rod. 

1. An arrangement for side-tracking of a boring machine mounted on a truck moving on tracks in mines with a limited profile comprising in combination: a horizontal stiff truck frame, two pairs of arms pivotable around vertical axis on said truck frame, wheels on free ends of said arms, a vertical frame mounted rotatably on said stiff truck frame about a vertical axis passing through the center of said stiff truck frame, at least one boring set supported on one side of the vertical frame, a horizontal beam supported with one of its ends pivotably around a vertical axis on the opposite side of the vertical frame, a telescopically extensible prop, the second end of said horizontal beam connected to the jacket of said prop, a rod parallel with said horizontal beam, one end of said rod joint connected with a bracket fixed to the vertical frame, the second end of said rod joint connected to a vertical guiding rod fixed to said prop, the horizontal beam and said rod parallel therewith forming parts of a parallelogram.
 2. An arrangement as set forth in claim 1, said horizontal beam linked with said vertical frame by means of a hydraulic side-tracking cylinder.
 3. An arrangement as set forth in claim 1, said vertical frame linked with said stiff truck frame by means of a hydraulic revolving cylinder.
 4. An arrangement as set forth in claim 1, said arms with wheels, supported horizontally pivotably by the stiff truck frame pRovided with stable levers, a hydraulic cylinder with a piston rod located freely in the space between pivoting axis of said arms, said stable levers linked by rods on one side to said hydraulic cylinder, on the other side to its piston rod. 